यदि $3 \sin \theta + 4 \cos \theta = 3$ और $\theta \neq (2n + 1) \frac{\pi}{2}$ है,तो $\sin 2 \theta = $

  • A
    $\frac{336}{625}$
  • B
    $-\frac{7}{25}$
  • C
    $\frac{24}{25}$
  • D
    $-\frac{336}{625}$

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यदि समीकरण $\tan^4x - 2\sec^2x + [a]^2 = 0$ का कम से कम एक हल है,तो $a$ (जहाँ $a \in R$) का पूर्ण परिसर क्या है?
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